Fellow guest Loni Love asked about Giudice's bridal party on WWHL's after-show, where she spilled the tea.
"How many bridesmaids are you gonna have?" Love asked. "Eight," Giudice shared. "Any of the Housewives and your castmates?" Love continued, to which Giudice responded with a firm, "No."
"Melissa will not be a bridesmaid?" WWHL's host, Andy Cohen, asked. "No," Giudice maintained, much to the audience's surprise.
"Oh, don't make a big deal," the reality TV star pleaded.
It appears that the on-air revelation will also be news to Gorga, as Giudice shared that she hasn't broken the bad news to her sister-in-law yet.
ET spoke with the RHONJ OG in January, where she shared more details about her summer wedding.
"I definitely don't want [my wedding] on Jersey Housewives, let's just leave it at that," Giudice said, adamantly. "I know the fans have been so invested in everything. I don't know, I have no idea. I don't know."
Giudice also told ET at the time that she was torn between having her wedding in Italy or New Jersey, but as she revealed on WWHL, a journey with Ayahuasca settled that, and she'll be saying "I do" to Ruelas in the Garden State.
Despite keeping the wedding local, Giudice told ET, not all of her RHONJ castmates are getting an invite.
"I'm not a fighter. I'm a lover," she professed. "I'm a lover. I'm all about the love. That's why I just want to spread the love."